A couple of points jump out. First, how many of these apps 'just missed' or were subsumed in other apps; AltaVista is the most prominent of these, and actually received its own sidebar to the main article. Also, the apps that are missing, including Paypal, peer-to-peer (Napster, et al.), and (of course) Netscape. But thought provoking, and well-done by Mr. Babcock.